Package io.trino.operator

Interface WorkProcessor.Transformation<T,R>

All Known Subinterfaces:

PageJoiner

All Known Implementing Classes:

DefaultPageJoiner, PageJoiner

Enclosing interface:

WorkProcessor<T>

public static interface WorkProcessor.Transformation<T,R>

Method Summary

Modifier and Type	Method	Description
WorkProcessor.TransformationState<R>	process(T element)	Processes input elements and returns current transformation state.

Method Details

process

WorkProcessor.TransformationState<R> process(@Nullable
 T element)

Processes input elements and returns current transformation state.

Parameters:

element - an element to be transformed. Will be null when there are no more elements. In such case transformation should finish processing and flush any remaining data.

Returns:

the current transformation state, optionally bearing a result

See Also:

• WorkProcessor.TransformationState.needsMoreData()
• WorkProcessor.TransformationState.blocked(ListenableFuture)
• WorkProcessor.TransformationState.yielded()
• WorkProcessor.TransformationState.ofResult(Object)
• WorkProcessor.TransformationState.ofResult(Object, boolean)
• WorkProcessor.TransformationState.finished()